David began his musical education as a chorister at New College, Oxford where he was also a piano student of Paul Drayton and Christopher Headington. He went on to life as a music scholar at Cranleigh School in Surrey where he studied piano, organ and oboe, and from there continued musical studies at The Royal College of Music, studying organ with Nicholas Danby, graduating with a BMus (Hons, London) in 1981.
Over the years he has become best known as leader and musical arranger of The David Rees-Williams Trio, which was formed in 1988 while he was co-owner of a well-known music venue in Canterbury, Kent.
The Trio first caught the imagination of listeners to BBC Radio 3 in 2001 when David's arrangement of Purcell's When I am Laid in Earth was played on the 'Morning on 3' programme. The BBC was inundated with listeners' calls, wanting to know how they could get hold of the music, and as a result, the Trio was invited to record a disc for the BBC on their new 'Late Junction' label. Hidden Colours was released in 2002, receiving excellent press reviews and reaching No.2 in the top ten of that year's HMV Choice. This was followed by Time Scape in 2004, Thinking Allowed in 2007, and Back From Before in 2010, all of which received four and five star reviews in the National Press. Both Thinking Allowed and Back From Before, released on the Depaean label, were actually recorded at Champs Hill thanks to the generosity of David and Mary Bowerman, and it was a natural progression for David to record for Champs Hill Records. David and the David Rees-Williams Trio perform in a wide variety of festivals, venues ranging from jazz clubs to cathedrals, and are regularly heard on national radio.